I mean yes, but that's because Saagar _is_ an authority. He's worked at at least one company that requires far greater amounts of knowledge and understand of Xcode, macOS, iOS, etc than the overwhelming majority of Mac+iOS devs.[1]

This is a case where an "appeal to authority" is reasonable - CyclOp posted an opinion, that claimed Saagar was incorrect, but provided no supporting evidence for the claim, e.g. they have at best appealed to cynicism, or more realistically themselves as the 'authority'.

Now if CyclOp had presented actual support for their claim, or the erroneousness of Saagar's comment just responding with "Saagar knows more than you" would be BS, but that isn't what happened here.

In honesty, I'd also consider lapcat an authority on Mac and iOS dev as well.